Samsung AC071MN4PKH Service Manual
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Samsung AC071MN4PKH Service Manual

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See also: Installation Manual
SYSTEM AIR CONDITIONER
SYSTEM AIR CONDITIONER
CIRCULAR CASSETTE SERIES
INDOOR UNIT
AC071MN4PKH
AC090MN4PKH
AC100MN4PKH
AC120MN4PKH
AC140MN4PKH
CONTENTS
1. Precautions
2. Product Specifications
3. Disassembly and Reassembly
4. Troubleshooting
5. PCB Diagram
6. Wiring Diagram
7. Reference Sheet
OUTDOOR UNIT
AC090MXADKH
AC100MXAD*H
AC120MXAD*H
AC140MXAD*H

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  • Page 1 SYSTEM AIR CONDITIONER CIRCULAR CASSETTE SERIES INDOOR UNIT OUTDOOR UNIT AC071MN4PKH AC090MXADKH AC090MN4PKH AC100MXAD*H AC100MN4PKH AC120MXAD*H AC120MN4PKH AC140MXAD*H AC140MN4PKH SYSTEM AIR CONDITIONER CONTENTS 1. Precautions 2. Product Specifications 3. Disassembly and Reassembly 4. Troubleshooting 5. PCB Diagram 6. Wiring Diagram...

  • Page 2: Table Of Contents

    Section 0 Contents 1. Precautions ....................................................................... 1-1. Precautions for the Service ........................1-2. Precautions related to static electricity and PL ........................... 1-3. Precautions related to product safety ..................................1-4. Other precautions 2. Product Specifications ..................................................................2-1. The Feature of Product ..................................
  • Page 3 Section 0 Contents 4-4-11. Communication error between outdoor unit INV MAIN MICOM (1 min.)(Error Code: E203) 4-39 ................4-4-12. Outdoor sensor error(Error Code : E221, E231, E251, E320) 4-40 ......4-4-13.Reverse phase / Loss phase detection (3-phase outdoor unit) (Error Code : E425 ) 4-41 ..............

  • Page 4: Precautions

    1. Precautions 1-1 Precautions for the Service Use the standard parts when replacing the electric parts. – Confirm the model name, rated voltage, rated current of the electric parts. When repairing the equipment, connection of the harness parts must be firm and solid. –...

  • Page 5: Precautions Related To Product Safety

    1-3 Precautions related to product safety Do not pull the power cord and do not touch the power plug or aux power switch with wet hands. – It might cause electric shock or fire. A damaged power line or power plug must be replaced to prevent danger. Do not bend the power cable with excessive force, and do not place a heavy weight on the case as it might damage the cable.

  • Page 6: Product Specifications

    2. Product Specifications 2-1 The Feature of Product □ 360 Cassette □ Differentiated innovation air cooling It delivers a cool air evenly with the circular air current and provides a wide and agreeable cooling area than general ceiling air conditioners. □...

  • Page 7: Product Specifications

    2-2 Product Specifications Development Model ITEM AC071MN4PKH AC090MN4PKH AC100MN4PKH AC100MN4PKH AC120MN4PKH AC120MN4PKH AC120MN4PKH AC140MN4PKH AC140MN4PKH AC090MXADKH AC100MXADKH AC100MXADKH AC120MXADKH AC120MXADKH AC120MXADNH AC140MXADNH AC140MXADKH Indoor Unit Outdoor Unit Design Remote Controller Cooling[w] 13.4 13.4 Capacity Heating [W] 11.2 11.2 15.5 15.5...
  • Page 8 Development Model AC071MN4PKH ITEM AC090MN4PKH AC100MN4PKH AC100MN4PKH AC120MN4PKH AC120MN4PKH AC120MN4PKH AC140MN4PKH AC140MN4PKH AC090MXADKH AC100MXADKH AC100MXADKH AC120MXADKH AC120MXADKH AC120MXADNH AC140MXADNH AC140MXADKH Indoor fan motor DB31-00577D DB31-00577D DB31-00577D DB31-00577D DB31-00577D DB31-00577D DB31-00577D DB31-00577D Harness spec Compressor UG8T300FUBJUSG UG8T300FUBJUSG UG8T300FUBJUSG UG5TK1450FJX UG5TK1450FJX UG5TK1450FJX...

  • Page 9: Specifications Of Optional Items

    2-3 Specifications of optional items 2-3-1 Accessories Item Description Code No. Q’ty Remark ASSY DRAIN- HOSE DB94-02719B Cable tie DB65-00191A Seal-drain ass'y DB62-05810A Standard / Indoor unit Seal-drain ass'y DB94-05810F Seal-drain ass'y DB94-05810G Indoor unit installation manual DB68-05899A USER MANUAL DB68-05918A Drain cap DB63-10355C...

  • Page 10: Wireless Remote Controller (Ar-Kh0O)

    Product Specifications 2-3-2 Wireless remote controller (AR-KH00E) Item Description Code No. Q’ty Remark Wireless remote controller DB93-15771C Batteries for remote controller 4301-000121 (specification: "AAA" type) Optional Remote controller holder DB61-06607A M4×16 Screw 6002-000581 User’s manual DB68-05911A...
  • Page 11 Product Specifications 2-3-3 Wired remote controller (MWR-WE10N) Item Description Code No. Q’ty Remark Wired remote controller DB93-11251F Cable tie DB65-10088B Cable clamp DB65-10074E Optional M4×16 Screw 6002-000474 User's manual DB68-03732A Installation manual DB68-03716A...

  • Page 12: Filter Specifications

    Product Specifications 2-3-4 Filter specifications Item Description Code No. Remark FILTER-AIR DB63-03764A...

  • Page 13: Disassembly And Reassembly

    3. Disassembly and Reassembly 3-1 Necessary Tools Item Remark + Screw Driver Monkey Spanner (8mm, 10mm, 13mm) M6, M8 Hex Wrench Spanner Torque Wrench...

  • Page 14: Indoor Unit

    3-2 Indoor Unit Parts Procedure Remark Panel ▶ Ceiling type Panel 1) Pull up the corner 4 places of Panel and separate it. 2) Remove the 4 screws from the corner of Panel. (Use +Screw Driver) 3) Pull the hook of Panel and then separate the Panel from the Indoor Unit.
  • Page 15 Disassembly and Reassembly Parts Procedure Remark Panel 2) Rotate the Grille to counterclockwise direction. 3) Remove the safety clip of Grill inside and then separate the Panel from the Indoor Unit. 4) Pull up the Filter from the Grill and separate it. 1) Reomove the 2 screws which is fixed to the Control Box Indoor Unit upper part.(Use +Screw Driver)
  • Page 16 Disassembly and Reassembly Parts Procedure Remark Control Box 3) Reomove the 1 screw which is fixed to the Indoor Unit upper part.(Use +Screw Driver) 4) Put finger in the "PULL" marked groove and then pull up the Cover 5) Put finger in the "PULL" marked groove and then avoids the hook and it opens the Control Box Cover...
  • Page 17 Disassembly and Reassembly Parts Procedure Remark Control Box 6) Separate the connectors from the Control Box. 7) Remove the ground screw. (Use +Screw Driver) Top Cover & Drain Pan 1) Remove the 3 screws. (Use +Screw Driver) 2) Push the hook and separate the Cover. Damage can occur to product in case of use a sharp tool.
  • Page 18 Disassembly and Reassembly Parts Procedure Remark Top Cover & Drain Pan 4) Pull the Booster Fan connector and separate the connector. 5) Remove the 4 screws. (Use +Screw Driver) 6) Push the hook and separate the Cover.
  • Page 19 Disassembly and Reassembly Parts Procedure Remark Top Cover & Drain Pan 7) Remove the screw and separate the Display Cover. (Use +Screw Driver) 8) ) Remove the 2 screws. (Use +Screw Driver) 9) Push the hook and separate the Cover. 10) Remove the 8 screws.
  • Page 20 Disassembly and Reassembly Parts Procedure Remark Top Cover & Drain Pan 12) Remove the 3 screws. (Use +Screw Driver) 13) Pull the hook that is on the side and separate the Cover. Drain Pump & Hose 1) Separate the Drain Hose from the Drain Pump.
  • Page 21 Disassembly and Reassembly Parts Procedure Remark Drain Pump & Hose 2) Remove the 2 screws and separate the Drain Hose that is on the side lower part of Indoor Unit (Use +Screw Driver) Fan & Motor 1) Remove the hex nut which is fixed to top of Fan and separate the Fan from the Motor.
  • Page 22 Disassembly and Reassembly Parts Procedure Remark Evaporator 1) Remove the screws which is fixed to Indoor Unit and separate the Evaporator fixing bracket. (Use +Screw Driver) 2) Remove screws which is fixed to Indoor Unit and pull the hook and then separate the Drain Cover.

  • Page 23: Outdoor Unit

    Disassembly and Reassembly 3-3. Outdoor Unit ■ AC090/100/120MXAD*H Parts Procedure Remark Cabinet Front RH Turn off the power before disassembly necessarily. 1) Remove the 2 screws from the Cabinet Front RH and separate it. (Use +Screw Driver) Cabinet Upper 1) Remove the 9 screws which is fixed to each side of Cabinet Upper and separate it.
  • Page 24 Disassembly and Reassembly Parts Procedure Remark Outdoor Unit Guard 1) Pull out the sensor from the Outdoor Unit Guard and separate it. 2) Remove the 4 screws which is fixed to Outdoor Unit Guard and separate it. (Use + Screw Driver) Cabinet Rear RH 1) Pull out the sensor from the Cabinet Rear RH and separate it.
  • Page 25 Disassembly and Reassembly Parts Procedure Remark Cabinet-Installation 1) Remove the 1 screw from the Cabinet- Rear Part Installation Rear Part and separate it.(Use + Screw Driver) Cabinet Front LF 1) Remove the 10 screws from the Cabinet Front LF and separate it. (Use +Screw Driver) 3-13...
  • Page 26 Disassembly and Reassembly Parts Procedure Remark Cabinet Front LF 1) Remove the 2 fixing nuts like the picture on the right side. (Use Hexagon Wrench, Monkey Spanner, Hexagon Socket) 3-14...
  • Page 27 Disassembly and Reassembly Parts Procedure Remark Motor 1) Separate the Fan Propeller. 2) Remove the 8 screws which is fixed to Motor. (Use +Screw Driver) 3) Separate the Motor Wire connector from the Outdoor Unit Control Part. Bracket Motor 1) Remove the 2 screws from the Bracket Motor and separate it.
  • Page 28 Disassembly and Reassembly Parts Procedure Remark Control Part 1) Separate the 4 connectors from the Outdoor Unit Control part. 2) Remove the 1 screw which is fixed to Control Part. (Use +Screw Driver) 3) Separate the Control Part. 3-16...
  • Page 29 Disassembly and Reassembly Parts Procedure Remark 4 Way Valve 1) First, discharge the refrigerant. 2) Remove the 2 screws which is fixed to Service Valve and separate it. (Use +Screw Driver) 3) Separate the inlet and outlet pipes by welding torch. If you separate the Compressor, Heat Exchanger or Pipe, please fully discharge refrigerant in the Compressor and then...
  • Page 30 Disassembly and Reassembly Parts Procedure Remark EEV Valve 1) Remove the 2 screws which is fixed to Service Valve and separate it. (Use +Screw Driver) 2) Separate the inlet and outlet pipes by welding torch. Compressor 1) Remove the 1 fixing nut from the end of Cover and separate it.
  • Page 31 Disassembly and Reassembly Parts Procedure Remark 3) Remove the 3 bolts from the bottom of Compressor Compressor like the picture on the right side. (Use Hexagon Wrench, Monkey Spanner, Hexagon Socket) Condenser Connection 1) Remove the 3 screws which is fixed to each Part side of Condenser Connection Part and separate it.
  • Page 32 Disassembly and Reassembly ■ AC140MXAD*H Parts Procedure Remark Cabinet Front RH Turn off the power before disassembly necessarily. 1) Remove the 2 screws from the Cabinet Front RH and separate it. (Use + Screw Driver) Cabinet Upper 1) Remove the 9 screws which is fixed to each side of Cabinet Upper and separate it.(Use + Screw Driver) Cabinet-Installation...
  • Page 33 Disassembly and Reassembly Parts Procedure Remark Outdoor Unit Guard 1) Pull out the sensor from the Outdoor Unit Guard and separate it. 2) Remove the 4 screws which is fixed to Outdoor Unit Guard and separate it. (Use + Screw Driver) Cabinet Rear RH 1) Pull out the sensor from the Cabinet Rear RH and separate it.
  • Page 34 Disassembly and Reassembly Parts Procedure Remark Cabinet-Installation 1) Remove the 1 screw from the Cabinet- Rear Part Installation Rear Part and separate it.(Use +Screw Driver) Cabinet Front LF 1) Remove the 10 screws from the Cabinet Front LF and separate it. (Use +Screw Driver) 3-22...
  • Page 35 Disassembly and Reassembly Parts Procedure Remark Cabinet Front LF 1) Remove the 2 fixing nuts like the picture on the right side. (Use Hexagon Wrench, Monkey Spanner, Hexagon Socket) 3-23...
  • Page 36 Disassembly and Reassembly Parts Procedure Remark Motor 1) Separate the Fan Propeller. 2) Remove the 8 screws which is fixed to Motor. (Use +Screw Driver) 3) Separate the Motor Wire connector from the Outdoor Unit Control Part. Bracket Motor 1) Remove the 2 screws from the Bracket Motor and separate it.
  • Page 37 Disassembly and Reassembly Parts Procedure Remark Control Part 1) Separate the 4 connectors from the Outdoor Unit Control part. 2) Remove the 1 screw which is fixed to Control Part. (Use +Screw Driver) 3) Separate the Control Part. 3-25...
  • Page 38 Disassembly and Reassembly Parts Procedure Remark 4 Way Valve 1) First, discharge the refrigerant. 2) Remove the 2 screw which is fixed to Service Valve. (Use +Screw Driver) 3) Separate the inlet and outlet pipes by welding torch. If you separate the Compressor, Heat Exchanger or Pipe, please fully discharge refrigerant in the Compressor and then separate the Pipe by welding torch.
  • Page 39 Disassembly and Reassembly Parts Procedure Remark Compressor 1) Remove the 1 fixing nut from the end of Cover and separate it. (Use Hexagon Wrench, Monkey Spanner, Hexagon Socket) 2) Separate the Felt Compressor. 3) Remove the 3 bolts from the bottom of Compressor like the picture on the right side.
  • Page 40 Disassembly and Reassembly Parts Procedure Remark Condenser Connection 1) Remove the 3 screws which is fixed to each Part side of Condenser Connection Part and separate it. (Use + Screw Driver) 3-28...

  • Page 41: Setting An Indoor Unit Address And Installation Option

    4. Troubleshooting 4-1 Setting an indoor unit address and installation option ▶ Indoor address set-up and installation options, set the remote control option.. ADDRESS setting and indoor settings option haohni setting is not possible at the same time, set each of the options. If necessary, set up the indoor address setting installation options, you must enter twice.

  • Page 42: The Procedure Of Setting Option

    Troubleshooting 4-1-2. The procedure of setting option Steps Remote control display 1 Set the SEG2 and SEG3 values: a Set the SEG2 value by pressing the (Low Fan) button repeatedly until the value you want to set appears on the remote control display. SEG 2 b Set the SEG3 value by pressing the (High Fan) button repeatedly until the value you want...
  • Page 43 Troubleshooting The procedure of setting option(Cont.) Steps Remote control display 7 Set the SEG9 and SEG10 values: a Set the SEG9 value by pressing the (Low Fan) button repeatedly until the value you want to set appears on the remote control display. SEG 9 b Set the SEG10 value by pressing the (High Fan) button repeatedly until the...
  • Page 44 Troubleshooting The procedure of setting option(Cont.) Steps Remote control display 12 Press the (Mode) button. Cool and Off appear on the remote control display. 13 Set the SEG16 and SEG17 values: a Set the SEG16 value by pressing the (Low Fan) button repeatedly until the value you want to set appears on the remote control display.
  • Page 45 Troubleshooting The procedure of setting option(Cont.) Steps Remote control display 18 Press the (Mode) button. Heat and Off appear on the remote control display. 19 Set the SEG23 and SEG24 values: a Set the SEG23 value by pressing the (Low Fan) button repeatedly until the value you want to set appears on the remote control display.
  • Page 46 Troubleshooting The procedure of setting option(Cont.) Check the option you have set Step 3 Check whether the option values that you have set are correct by pressing the (Mode) button repeatedly [ SEG2, SEG3 ] [ SEG4, SEG5 ] [ SEG6, SEG8 ] [ SEG9, SEG10 ] [ SEG14, SEG15 ] [ SEG16, SEG17 ]...

  • Page 47: Mode Button

    Troubleshooting AR-KH00E remote control (for 360 cassette only) Entering the Setting the mode for setting option values the options Mode button Wheel Temperature button Temperature button NO TE The r emote c ontr ol display may vary depending on the model. 1 Enter the mode f or setting the options: a Rem ove the batteries from the r emote control.
  • Page 48 Troubleshooting The procedure of setting option Steps Remote control display 1 Set the SEG2 and SEG3 values: a Set the SEG2 value by rotating the Wheel counterclockwise until the value you want to set appears on the remote control display. SEG 2 b Set the SEG3 value by rotating the Wheel clockwise until the value you want to set appears on the remote control display.
  • Page 49 Troubleshooting The procedure of setting option(Cont.) Steps Remote control display 7 Set the SEG9 and SEG10 values: a Set the SEG9 value by rotating the Wheel counterclockwise until the value you want to set appears on the remote control display. SEG 9 b Set the SEG10 value by rotating the Wheel clockwise until the value you want to set appears on the remote control display.
  • Page 50 Troubleshooting The procedure of setting option(Cont.) Steps Remote control display 13 Set the SEG16 and SEG17 values: a Set the SEG16 value by rotating the Wheel counterclockwise until the value you want to set appears on the remote control display. SEG 16 b Set the SEG17 value by rotating the Wheel clockwise until the value you want to set appears on the remote control display.
  • Page 51 Troubleshooting The procedure of setting option(Cont.) Steps Remote control display 19 Set the SEG23 and SEG24 values: a Set the SEG23 value by rotating the Wheel counterclockwise until the value you want to set appears on the remote control display. SEG 23 b Set the SEG24 value by rotating the Wheel clockwise until the value you want to set appears on the remote control display.

  • Page 52: Order For Setting Options (Wired Remote Controller)

    Troubleshooting 4-1-3. Order for Setting Options (Wired Remote Controller) SEGs for Use 1 2 3 Main Menu Sub-menu 1. If you want to use the various additional functions for your Wired Remote Controller, press the Set and Esc buttons at the same time for more than three seconds.

  • Page 53: Indoor Address(Main/Rmc)Setting

    Troubleshooting 4-1-4. Indoor address(MAIN/RMC)setting Before installing an indoor unit, be sure to set an address for the indoor unit by taking the following steps: Indoor unit 1. Make sure that the power is supplied to the indoor unit. If the indoor unit is not plugged in, it must include a power supply.

  • Page 54: Set The Indoor Installation Options(Option To Set For The Installation Site Conditions)

    Troubleshooting 4-1-5. Set the indoor installation options(Option to set for the installation site conditions) 1. Make sure that the power is supplied to the indoor unit. If the indoor unit is not plugged in, it must include a power supply. Indoor unit 2.

  • Page 55: Changing The Addresses And Options Individually

    Troubleshooting 4-1-6. Changing the addresses and options individually When you want to change the value of a specific option, refer to the following table and follow the steps in Common steps for setting the addresses and options Option SEG1 SEG2 SEG3 SEG4 SEG5...

  • Page 56: Model-Specific Option Code

    4-2. Model-specific option code Model SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 AC071MN4PKH AC090MN4PKH AC100MN4PKH AC120MN4PKH AC140MN4PKH Model SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 AC071MN4PKH AC090MN4PKH AC100MN4PKH AC120MN4PKH AC140MN4PKH 4-16...

  • Page 57: Diagnostic Checklist Ago

    Troubleshooting 4-3. Diagnostic Checklist ago 4-3-1. Test operation mode and check mode ▒ Display Options key Display KEY Push type Mode SEG1 SEG2 SEG3 SEG4 Heating test mode K1 Short Defrost test mode Stop 7-segment display Cooling test Key Switch K2 Short Inverter check Pump down...

  • Page 58: Eco Mode [Power Save Mode]

    Troubleshooting ▒ DIP switch options Off (default) switch 1 Auto address Manual address switch 2 switch 3 Disable snow prevention control Enable snow prevention control switch 4 ※ Snow-proof control when using eco mode (standby mode) is not working. 4-3-2. Eco Mode [Power Save Mode] <...

  • Page 59: Error Code [Indoor]

    Troubleshooting 4-3-3. Error code [indoor] Ice blue Yellow green Blue Indoor unit display indications Condition Ice blue Yellow green Blue Power reset (blinking once every 2 seconds) In the defrost operation (blinking once every 10 seconds) Open or short circuit error of the indoor -t atur emper e sensor...

  • Page 60: Error Code [Outdoor]

    Troubleshooting 4-3-4. Error code [outdoor] Error code Remarks Remarks E108 Error due to repeated communication address Check on repeated indoor unit main address Error on room temperature sensor of indoor unit E121 Indoor unit Room Thermistor Open/Short (Short or Open) E122 Error on EVA IN sensor of indoor unit (Short or Open) Indoor unit EVA_IN Thermistor Open/Short...
  • Page 61 Troubleshooting Error code [outdoor] (cont.) Error code Remarks Remarks 1. Check the range of temperature Heating operation restricted at outdoor E440 limited for heating operation temperature over Theat_ high value 2. Check the outdoor temperature sensor 1. Check the range of temperature limited Cooling operation restricted at outdoor E441 for cooling operation...
  • Page 62 Troubleshooting 4-3-5 Wired remote controller - If an error occurs, ( ) icon will be displayed on the wired remote controller. - Press the Test button to see the error code. Product operation in error condition Error mode Contents Measure Error type Outdoor unit/ Compressor/Indoor unit...
  • Page 63 Troubleshooting Wired remote controller (cont.) Product operation in error condition Error mode Contents Measure Error type Outdoor unit/ Compressor/ Indoor unit Check the compressor connection status. Outdoor unit [Inverter] Compressor Check the resistance between difference phases of Operation Off protection startup error the compressor.
  • Page 64 Troubleshooting Wired remote controller (cont.) Product operation in error condition Error mode Contents Measure Error type Outdoor unit/ Compressor/ Indoor unit Check the input power connection status Check the connection status of the motor and the Self diagnostic Outdoor fan 2 error Operation Off outdoor unit PCB error...

  • Page 65: Troubleshooting By Symptoms

    Troubleshooting 4-4. Troubleshooting by symptoms 4-4-1. When the indoor unit power is not ON – Initial Diagnosis : 1-phase products 1. Test items 1) Check the power connection of indoor/outdoor unit and check the power wire of Terminal Block. 2) Check the connection of the power wire between the Power PCB Main PCB DC of indoor unit.

  • Page 66: Indoor Temperature Sensor Error (E121)

    Troubleshooting 4-4-2. Indoor temperature sensor error (E121) Indoor unit display 360 Cassette x(Ice blue) x(Yellow green) x(Blue) ◑(Red) Judgment method Refer to checking method, as shown below. Symptom If the indoor temperature sensor is open or short circuit. Is indoor temperature sensor disconnected from the connector in PCB? Restart the system after connecting...

  • Page 67: Indoor Heat Exchanger Temperature Sensor Error (E122)

    Troubleshooting 4-4-3. Indoor heat exchanger temperature sensor error (E122) x(Ice blue) ◑(Yellow green) x(Blue) ◑(Red) Indoor unit display 360 Cassette Judgment method Refer to checking method, as shown below Symptom If the short or open circuit of indoor heat exchanger temperature sensor. Is the indoor heat exchanger temperature sensor connector disconnected from the PCB?

  • Page 68: Indoor Fan Error (E154)

    Troubleshooting 4-4-4. Indoor Fan error (E154) 360 Cassette x(Ice blue) x(Yellow green) ◑(Blue) ◑(Red) Indoor unit display Judgment method Refer to checking method, as shown below Symptom If the motor connector break away / Indoor unit Fan does not operate by motor or PBA defectiveness. During operation or Operation at the beginning : E154 is displayed.

  • Page 69: Communication Error After Finishing Tracking (E202)

    Troubleshooting 4-4-5. Communication error after finishing Tracking (E202) Indoor unit display 360 Cassette x(Ice blue) ◑(Yellow green) x(Blue) x(Red) Judgment method Refer to checking method, as shown below Symptom If the communication error between the indoor and outdoor unit for two minutes. Is there a response from the indoor PCB? Check the communication cable and (LED01 (RED) is not ON)

  • Page 70: Indoor Unit Float Sensor Error

    Troubleshooting 4-4-6. Indoor unit float sensor error Indoor unit display 360 Cassette x(Ice blue) ◑(Yellow green) ◑(Blue) x(Red) Judgment method Refer to checking method, as shown below If the increase in the drain pan water level due to failure of the indoor unit drain pump or indoor unit Symptom float switch is open and that state is maintained for more than one minute.

  • Page 71: Eeprom Circuit Failure (E162)

    Troubleshooting 4-4-7. EEPROM circuit failure (E162) Indoor unit display 360 Cassette ◑(Ice blue) x(Yellow green) x(Blue) ◑(Red) Judgment method Refer to checking method, as shown below If the EEPROM component defective. Symptom (EEPROM circuit parts missing / damaged / soldering failure) Is state of EEPROM circuit component good? (Circuit parts missing / damaged /...

  • Page 72: The Whistling Noise From The Indoor Unit In Low Wind Mode

    Troubleshooting 4-4-8. The whistling noise from the indoor unit in low wind mode Is there abnormal noise like the whistling from the indoor unit in low wind mode? Replace a fan a motor. Is there abnormal noise in a fan or a motor? Check normal startup End the service Replace a fan a motor.

  • Page 73: When The Outdoor Unit Power Is Not On - Initial Diagnosis : 3-Phase Products

    Troubleshooting 4-4-9. When the outdoor unit power is not ON - Initial Diagnosis : 3-phase products 1. Test items 1) Check the power connection of outdoor unit. 2) Check the whole connection part of the power wire. 3) Check the power on the indoor unit. 4) Check the connection of the power wire of the Terminal Block.
  • Page 74 Troubleshooting When the outdoor unit power is not ON - Initial Diagnosis : 3-phase products (cont.) Continue Check the power parts. (Switch off power to the Terminal Box before inspection!) 1. Is there a fault with a fuse? (Short-Normal, Open-Fault) After replacing the main PCB and resetting the 2.
  • Page 75 Troubleshooting When the outdoor unit power is not ON - Initial Diagnosis : 1-phase products 1. Test items 1) Check the power connection of outdoor unit. 2) Check the whole connection part of the power wire. 3) Check the power on the indoor unit. 4) Check the connection of the power wire of the Terminal Block.
  • Page 76 Troubleshooting When the outdoor unit power is not ON - Initial Diagnosis : 1-phase products (cont.) Continue Check the power parts. (Switch off power to the Terminal Box before inspection!) 1. Is there a fault with a fuse? (Short-Normal, Open-Fault) After replacing the main PCB and resetting the 2.

  • Page 77: Indoor/Outdoor Communication Error (1Min.) (Error Code : E202)

    Troubleshooting 4-4-10. Indoor/outdoor communication error (1min.) (Error Code : E202) 1. Test items 1) Check the communication wire and power wire connection. 2) Check the communication connector connection. - CN31 of outdoor unit Main PCB 3) Check the communication circuit on the PCB. 2.
  • Page 78 Troubleshooting Indoor/outdoor communication error (1 min.) (Error Code: E202) (cont.) Continue Check the communication circuit of the Main PCB of the outdoor unit. 1. Is there a fault in communication IC? 2. Is there a fault in TVS-Diode? Measuring Communication IC Measuring Part Example of Measuring Example of Measuring Part...

  • Page 79: Main Micom (1 Min.)(Error Code: E203)

    Troubleshooting 4-4-11. Communication error between outdoor unit INV MAIN MICOM (1 min.)(Error Code: E203) 1. Test items 1) Is power supplied to outdoor unit Inverter PCB? 2) Check the power wire connection and fuse. 3) Is there a problem in the communication wire connections between the outdoor unit Inverter (CN31) Main PCB (CN39)? 4) Check the communication wire connections.

  • Page 80: Outdoor Sensor Error(Error Code : E221, E231, E251, E320)

    Troubleshooting 4-4-12. Outdoor sensor error(Error Code : E221, E231, E251, E320) 1. Test items Error CODE Description E221 Outdoor temperature sensor error 1) Check the connection of the temperature sensor connector. E231 Outdoor temperature sensor error 2) Check the resistance value of the temperature sensor. E251 Outdoor temperature sensor error E320...

  • Page 81: 4-4-13.Reverse Phase / Loss Phase Detection (3-Phase Outdoor Unit) (Error Code : E425 )

    Troubleshooting 4-4-13. Reverse phase / Loss phase detection (3-phase outdoor unit) (Error Code : E425 ) 1. When power is on, it checks the power status used for 3-phase power compressor. When the order of 3-phase L1(R) – L2(S) – L3(T) is changed (Reverse phase) or there is a phase that does not supply power (Loss phase), it will display and the air conditioner will stop operating.

  • Page 82: Compressor Down Due To Freezing Control (Error Code : E403)

    Troubleshooting 4-4-14. Compressor down due to freezing control (Error Code : E403) 1. Test items 1) Check the normal operation of indoor Fan/Motor. 2) Check the normal operation of indoor EEV. 3) Check the IN/OUT sensor of indoor heat exchanger. 3) Check the clogging of indoor air inlet part.

  • Page 83: Outdoor Unit Fan Error (Error Code : E458, E475)

    Troubleshooting 4-4-15. Outdoor unit Fan error (Error Code : E458, E475) 1. Test items 1) Check the connection of Fan connectors (CN90, CN91) 2) Check the voltage of the fan motor connector in the inverter PBA of the outdoor unit. 3) Check the power connection of the outdoor unit Inverter PCB.

  • Page 84: Compressor Starting Error / Rotation Error (Error Code : E461, E467)

    Troubleshooting 4-4-16. Compressor starting error / rotation error (Error Code : E461, E467) 1. Test items 1) Check the power connection. / Check the restart after power reset. 2) Check the compressor and the state of the compressor wire assembling. 3) Check the defective for compressor wire single parts.
  • Page 85 Troubleshooting Compressor starting error / rotation error (Error Code : E461, E467) (cont.) Continue 1. Did compressor wires assem 1. Replace the compressor wire. Power ON. bled in the appropriate color? Check normal startup. End the service. (U:Red, V:Blue, W:Yellow) Check for 2.

  • Page 86: Full Current Error / Pfc Over-Current Error (Error Code : E462, E484)

    Troubleshooting 4-4-17. Full current error / PFC over-current error (Error Code : E462, E484) 1. Test items 1) Check the power connection. / Check the restart after power reset. 2) Install outdoor unit and check environment. Check for wire disconnection related to outdoor unit Inverter PCB and check the installation environment. 3) Check the indoor unit installation environment.

  • Page 87: Ipm Ipm (Over Current) Error (Error Code : E464)

    Troubleshooting 4-4-18. IPM IPM (Over Current) error (Error Code : E464) 1. Test items 11) Check the power connection. / Check the restart after power reset. 2) Install outdoor unit and check environment. Check for wire disconnection related to outdoor unit Inverter PCB and check the installation environment. After having installed several units, please check that communication wires are not interchanged with piping.
  • Page 88 Troubleshooting IPM over(Over Current) error (Error Code : E464)(cont.) Continue Open the valve. Is service valve fully opened? Is compressor wire connected properly to the Check the connection status of compressor. compressor? 1. Replace the compressor : If the resistance value Check the compressor.
  • Page 89 Troubleshooting IPM over(Over Current) error (Error Code : E464)(cont.) Continue 1. Did compressor wires assembled 1. Replace the compressor wire. Power ON. in the appropriate color? Check normal startup. End the service. (U:Red, V:Blue, W:Yellow) Check for 2. Replace the compressor wire. Power ON.

  • Page 90: Dc Link Over-Current / Low-Voltage Error (Error Code : E466)

    Troubleshooting 4-4-19. DC LINK over-current / low-voltage error (Error Code : E466) H/W DC_Link Over Voltage Error (Error Code : E483) AC Input Voltage Sensor Error (Error Code : E488 1. Test items 1) Check the power connection. / Check the restart after power reset. Is there a fault in input power? (Single-phase : 220Vac, 3-phase : 380Vac) Does error occur again at operation after power is reset? 2) Check the connection of the power, and check whether the jointed power connection exists.

  • Page 91: Gas Leakage Error(Error Code : E554)

    Troubleshooting 4-4-20. Gas leakage error(Error Code : E554) 1. Test items 1) Check the power connection. / Check the restart after power reset. Is there a fault in input power? (Single-phase : 220Vac, 3-phase : 380Vac) Does error occur again at operation after power is reset? 2) Check the compressor and the state of compressor wire assembling.
  • Page 92 Troubleshooting Gas leakage error(Error Code : E554) (Cont.) Continue Open the valve. Is service valve fully opened? Is the indoor EVA sensor correctly connected? Reconnect the sensor connector. Charge the refrigerant. Is refrigerant charged? Replace the inverter PCB. 4-52...

  • Page 93: Pipe Blockage Error(Error Code : E422)

    Troubleshooting 4-4-21. Pipe blockage error(Error Code : E422) 1. Test items 1) Check the open state of the outdoor unit service valve. 2) Check the connection of the pipe. 3) Check the operation of the EEV. 4) Check the refrigerant leakage. 5) Check the connection of the indoor unit PBA EVA sensor.

  • Page 94: Smart Install Mode Was Not Carried Out (Error Code : E508 )

    Troubleshooting 4-4-22. Smart install mode was not carried out (Error Code : E508 ) Smart install mode? When installing the air conditioner the first time, the installation status and fault status and performance of the product is a self-diagnostic function to determine comprehensively.. (The corresponding model is necessarily the general operation can be carried out when the smart install mode.) Installation procedures of smart install mode (1) Check the installation status of air conditioner.
  • Page 95 Troubleshooting Precautions ▶ When needing to have additional piping before entering the installation smart install mode, charge refrigerant additionally according to the manual. At this time, it is possible to run the cooling test (K2 switch once) and heating test (K1 switch once). ▶...

  • Page 96: Others

    Troubleshooting 4-4-22. Others EEPROM option error (E163) : Reset the options. Temperature fuse error : E198 - If the Terminal Box temperature rise fuse is disconnected, replace the PCB. - Check the wiring connector of temperature fuse. Current sensor error : Upload EEPROM to the Main PCB of the outdoor unit. - After checking for normal operation of PCB, replace the inverter PCB.
  • Page 97 Troubleshooting 15. Current sensor error : E468 - Check the EEPROM data. - Check the PCB operation. 16. IPM (IGBT Module) or PFCM temperature sensor error : E474 IPM overheat error for outdoor unit inverter compressor : E500 - Check whether IPM is correctly assembled on the heatproof plate. - Check whether the inlet is blockage.

  • Page 98: Pcb Diagram And Parts List

    PCB Diagram and Parts List 5. PCB Diagram and Parts List 5-1. PCB Diagram 5-1-1. Indoor Unit Main PBA...
  • Page 99 PCB Diagram and Parts List ① CN101-EARTH GND ② CN900-BLDC MOTOR ③ CN102-FUSE CHECK ④ CN950-SUCTION FAN #1 : EARTH GND #1 : DC 310V #1 : FUSE CHECK SIGNAL #1,#5 #9 : DC12V #3 : GND #2 : GND #2 #6 #10 : FAN FEEDBACK #4 : DC 15V #3 #7 #11 : GND...

  • Page 100: Display Pcb

    PCB Diagram and Parts List 5-1-2. Display PCB ■ 360 Cassette ① CN401 – DISPLAY 1 #1 : 12V #2 : VISUALIZATION LED_SECTION2, LAYER2 #3 : VISUALIZATION LED_SECTION2, LAYER3 #4 : VISUALIZATION LED_SECTION3, LAYER1 #5 : VISUALIZATION LED_SECTION3, LAYER2 #6 : VISUALIZATION LED_SECTION3, LAYER3 ②...

  • Page 101: Outdoor Pcb

    PCB Diagram and Parts List 5-1-3. Outdoor PCB ■ Main PCB - AC090/100/120/140MXAD*H 11 12...
  • Page 102 PCB Diagram and Parts List ① CN101 - POWER ② CN702 - 4WAY ③ CN403 - SENSOR ④ CN306 - DOWNLOAD #1 : L #1 : N #1 : OUT TEMP #1 ~ #20 : DOWNLOAD #2 : N.C #2 : N.C #2 : GND #3 : N #3 : 4WAY V/V SIGNAL...
  • Page 103 PCB Diagram and Parts List Outdoor Unit PCB (cont.) ■ PF#4 INVERTER PCB : SINGLE-PHASE I - AC090/100MXADKH...
  • Page 104 PCB Diagram and Parts List Reactor - A1/B1 Reactor – A2/B2 Comp. W CN551-INV-Download ① ② ③ ④ #Reactor-A1 : WHT #Reactor-A2 : BLK #1 : RXD #1 : RXD_INV #Reactor-B1 : WHT #Reactor-B2 : BLK #2 : TXD #2 : TXD_INV #3 : GND #3 : BOOT_INV #4 : DV5V...
  • Page 105 PCB Diagram and Parts List Outdoor Unit PCB (cont.) ■ PF#6-1 INVERTER PCB : 3-PHASE I - AC100MXADNH...
  • Page 106 PCB Diagram and Parts List RST –AC Power 3phase CN100 - AC Power CN31 – Main Comm CN22 - Downloader ① ② ③ ④ #R : AC 380~400V : WHT #1~#3 : AC 220~240V #1 : RXD #1 : RXD_INV #S : AC 380~400V : BRN #2 : TXD #2 : TXD_INV...
  • Page 107 PCB Diagram and Parts List Outdoor Unit PCB (cont.) ■ PF#4 Inverter PCB : Single-phase Ⅱ - AC120MXADKH Reactor-A1/B1 Reactor-A2/B2 CN351 - Main COMM CN551 – Downloader ① ② ③ ④ #Reactor-A1 : WHT #Reactor-A2 : BLK #1 : RXD #1 : RXD_INV #7 : TMS_INV #Reactor-B1 : WHT #Reactor-B2 : BLK...
  • Page 108 PCB Diagram and Parts List Outdoor Unit PCB (cont.) ■ PF#5 Inverter PCB : Single-phase III - AC140MXADKH Reactor-A1/B1 Reactor-A2/B2 CN351 - Main COMM CN551 – Downloader ① ② ③ ④ #Reactor-A1 : WHT #Reactor-A2 : BLK #1 : RXD #1 : RXD_INV #7 : TMS_INV #Reactor-B1 : WHT #Reactor-B2 : BLK...
  • Page 109 PCB Diagram and Parts List Outdoor Unit PCB (cont.) ■ PF#6 Inverter PCB : 3-phase Ⅱ - AC120/140MXADNH RST - AC Power 3phase CN100-AC Power CN351 - Main COMM CN22-Downloader ① ② ③ ④ #R : AC 380~400V : WHT #1-#3 : AC 220~240V #1 : RXD #1 : RXD_INV #7 : TMS_INV...
  • Page 110 PCB Diagram and Parts List Outdoor Unit PCB (cont.) ■ EMI PCB : single-phase - AC090/120/140MXADKH L1-AC Power L phase ① ② N1-AC Power N phase ③ CN01-AC Power L1 : BRN N1 : SKY-BLU #1-#3 : AC 220~240V 5-13...
  • Page 111 PCB Diagram and Parts List Outdoor Unit PCB (cont.) ■PF#6 Inverter PCB : 3-phase - AC100/120/140MXADNH ① RST-AC Power 3phase ② CN100-AC Power #R : AC 380~400V : WHT #1-#3 : AC 220~240V #S : AC 380~400V : BRN #T : AC 380~400V : BLK 5-14...

  • Page 112: Wiring Diagram

    Wiring Diagram 6. Wiring Diagram 6-1. Indoor Unit ■ Circular Cassette This Document can not be used without Samsung’ s authorization..

  • Page 113: Outdoor Unit

    Wiring Diagram 6-2. Outdoor Unit ■ Single-phase PF#4 / PF#4-1 / PF#5 Schematic Diagram This Document can not be used without Samsung’ s authorization.
  • Page 114 Wiring Diagram ■ 3-phase PF#6 / PF#6-1 Schematic Diagram This Document can not be used without Samsung’ s authorization.

  • Page 115: Sw Update

    SW update 7. SW update 7-1. S-net pro Download Download link : http://mosaic.sec.samsung.net/club/club.menu.bbs.list.screen?p_club_id=1219&p_menu_id=14 Note : If you do not have an authority to access the intranet, contact to your counter partner !! : for Non Nasa AC Micom & eeprom : for Nasa AC Micom &...
  • Page 116 SW update 7-3. How to update the Micom(RS485) Through RS485 communication. Connect S-converter to F1,F2 line Step 1 - F1,F2 terminal block on ODU - F1,F2 connector on ODU’s main pcb - F1,F2 terminal block on IDU Outdoor unit Main PCB USB to RS232 cable S-Converter Step 2...
  • Page 117 SW update How to update the Micom(RS485) (cont.) SW Update of the hardware boards have always been critical operations.In order to reduce the time,increase usability and more on top of reliability of having the SW update successfully. A/C SW update enables the engineer to update the SW of indoor , outdoor and MCU boards when the S-Net Pro2 is in normal communication mode.

  • Page 118: How To Update The Micom(Rs485)

    SW update How to update the Micom(RS485) (cont.) 2. Browse and Select the *.hex file. 3. Select the device from the list of devices and select the address of the device.
  • Page 119 SW update How to update the Micom(RS485) (cont.) 3-1  Manually entering the address of the device can leads to Firmware download failure  a. To add the address of the device, enter value to Device Firmware Update field.  b. On clicking the Add button will be added to the list. 3-2  Importing the address list of the device that is saved previous trial.
  • Page 120 SW update How to update the Micom(RS485) (cont.) 4. Click the Start button for initiating the SW update.  a. The firmware update for the device enters download mode will be displayed.  b. The progress bar at the bottom of the can check the progress of your downloads. 5.

  • Page 121: How To Update The Micom(Uart)

    SW update 7-4. How to update the Micom(UART) Update SW through RS232(UART) communication. Power down the unit and prepare to connect download cable to the PCB Step 1 * 20 pin connecter in black color(ODU - 10 pin connecter) Step 2 Execute S-net pro 2 and go to Add-On tab and click UART Update button USB to RS232 cable S-Converter...
  • Page 122 SW update How to update the Micom(UART) (cont.) 5. Select the download file and Click “Start button” and then Turn On the S-Converter 6. PCB will be updating...

  • Page 123: How To Write The Eeprom

    SW update 7-5. How to write the EEPROM update EEPROM through RS485 communication. Step 1 Connect S-converter to F1,F2 line Outdoor unit Main PCB USB to RS232 cable S-Converter Step 2 Execute S-net pro 2 and set environment then click connect button Click Connect...
  • Page 124 SW update How to write the EEPROM (cont.) Step 3 Go to Add-On tab and click EEPROM Writer This feature of the outdoor unit is the ability to write data to the outdoor unit EEPROM settings. (EEPROM firmware, the outdoor unit, FAN version, DBCode to be saved, etc., in fact, write the EEPROM when the outdoor unit are rare.) ▶...
  • Page 125 SW update How to write the EEPROM (cont.) Loading a data file and Establishing connection ▶ 1. Click [Open Option File] button to read the source files (. Src). The contents of the file is displayed on the screen and [Write Option] button is activated ▶...

  • Page 126: Reference Sheet

    Reference Sheet 8. Reference Sheet 8-1. Index for model name 8-1-1. Indoor Unit ★ ★ Buyer Name Capacity Version Product Type CAC (USD) / ASD (Packaged System) Grade Classification Mode FLAGSHIP COOLING ONLY PREMIUM HEAT PUMP R410a DELUXE ← Basic Launch Year HEAT RECOVERY STANDARD...

  • Page 127: Outdoor Unit

    Reference Sheet Index for model name (cont.) 8-1-2. Outdoor Unit ★ ★ Capacity Version Buyer Name Product Type CAC (USD) / ASD (Packaged System) Grade Classification Mode FLAGSHIP COOLING ONLY PREMIUM HEAT PUMP R410a DELUXE ← Basic HEAT RECOVERY STANDARD Launch Year COOLING ONLY 2012...

  • Page 128: Panel

    Reference Sheet Index for model name (cont.) 8-1-3. Panel ■ PC4N H 4N Panel Version ★ Product Design Classification Color Panel Black 1, 2, ..Domestic A, B, ..Export WINE White Ivory Communication Type NASA communication TYPE Old communication Product Type Automatic lift / Slide STANDARD...

  • Page 129: Refrigerating Cycle Diagram

    8-2 Refrigerating Cycle Diagram Indoor Unit Outdoor Unit Electronic expansion valve 3-way valve Liquid pipe Heat exchanger Heat exchanger Evaporator Evaporator 4-way valve Gas pipe 3-way valve Aux accumulator Compressor Cooling Heating Leak check points ■ CONDENSER High temperature and high pressure gas state coolant discharged from the compressor is converted to a liquid state as it is cooled down by the heat emission in the outdoor condenser unit, and sent to the evaporator.
  • Page 130 GSPN (GLOBAL SERVICE PARTNER NETWORK) Area Web Site © Samsung Electronics Co., Ltd. December. 2016. This Service Manual is a property of Samsung Electronics Co., Ltd. Printed in Korea. Any unauthorized use of Manual can be punished under applicable International and/or domestic law.

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